By Gurlitt Johannes   Renkl Alexander   in Instructional Science

ISSN:0020-4277|38|4|417-433

Springer Publishing Company ‎(2010)‎

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By Kozhevnikov Michael   Gurlitt Johannes   Kozhevnikov Maria   in Journal of Science Education and Technology

ISSN:1059-0145|22|6|952-962

Springer Publishing Company ‎(2013)‎

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